Disc socket wrench



Aug. 1l, 1959 B. FEDESON DISC SOCKET WRENCH Filed Aug. 28, 1957 INVENTOR.

27a/Wim Unite Staes Patent Thisrinvention relates to hand held tools,and moreV particularly to a disc socketl wrench.

The. discY socket wrench of the invention may be advantageously employedin certain situations where theI use of more conventional types ofwrenches would be impractical, or impossible. A specific situation wouldrelate to the application or removal of a nut from a stud, wherein thefree end of the stud isrelatively long, therebyk making use of aconventional socketwrench impractical or impossible. A further featureof the. disc socket wrench of the invention allows use of the discsocket part of the wrench alone for easy turning-,of a nut,under4certain conditions. Anotherl feature relates to @holdingarrangement of the disc socket whereby the disc socket may be easilymaintained in engagement with anutduringthe turning thereof.

The main object of this invention is to provide a disc socket wrenchwhich` may b e Vadvantageously employed in certain situations where theuse.of more conventional types of wrenches would be impractical orimpossible.

Another object of this invention is to provide a disc socket wrenchwherein the disc socket alone may be used for easy turning of a nutunder certain conditions.

Still another object of this invention is to provide a disc socketwrench having holding means whereby the disc socket may be easilymaintained in engagement with a nut during the turning thereof.

These and further objects and features of the invention will become moreapparent from the following description and accompanying drawingwherein:

Fig. 1 is a perspective view of a disc socket wrench embodying theprinciples of the invention;

Fig. 2 is a bottom plan view of the disc socket of the Wrench shown inFig. l;

Fig. 3 is a sectional view as seen from line 3--3 in Fig. 2;

Fig. 4 is the same as Fig. 3 but illustrating the application of thedisc socket to a nut threaded upon a stud;

Fig. 5 is a bottom plan view partially broken away in section andillustrating a modified form of the invention;

Fig. 6 is a sectional view as seen alo-ng line 6-6 of Fig. 5; and

Fig. 7 is a view showing a modified form of knurl used on the discsocket of Fig. 5.

Referring now to the drawing, the wrench of the invention includes adisc socket member 11 and Spanner wrench handle 12. 'Ihe socket member,which may be formed of metal, is disc-like in form and has anut-engageable socket recess 13 entering from one face and terminatingshort of the opposite face so as to provide an inwardly directed ange 14surrounding an axially arranged bore 16 which opens onto the face 17 ofthe socket member and which is of larger diameter than a threaded memberreceiving a nut engageable by the socket member. The ange 14 serves as aholding means whereby the socket member may be maintained against thetop of a nut 18, or equivalent. The face of the socket member on theside of the socket recess 13, has a taper 19 to provide clearance whenthe socket member 11 engages a nut. A plurality of holes 21 are arrangedabout the bore 16 parallel with the axis of the tocket member, andextend from the tapered surface 19 through the opposite face of thesocket member. The holes are arranged in pairs each of the holes of apair being in diametrical opposition. The periphery of the socket member11 has serrations 20 or knurls to afford iirm gripping of, the socketmember when the latter is used for manually rotating a nut. the socketmember is substantially greater than the diameter of the socket recess,thereby affording leverage for.y manually rotating the socket memberwhen -it is [placed in engagement with a nut.

A'Ihespanner wrench handle 12 has a bifurcated end ligarranged toprovide clearance about a stud when the handle is used upon theA socketmembery 11. Extending from the bifurcated end of the handle412 areprotrusions, orA pin members2l2. adapted for engaging` oppositelydisposed holes 21 ofthe socket member 11.Y

As seen in Fig. 4, the socket member 11 may beV placed upon the nut18mounted upon a stud 23 the free endy of which extends a substantialdistance beyondthe top of the .nut 1 8. Such a use of thewrenchy of theinvention would not,y be possiblewith conventional socket wrenchesvdueto theV length ofithe stud 23. Insuch position of the socketsmemberl11, the nut 1 8 may be rotated by,

willhold the socketjmember in` positionrVupon the nuty so that operativeengagement therewith will not be disrupted.

From the foregoing it will be seen that a disc socket wrench accordingto the invention may be used either for manually turning a nut upon athreaded member, or for using a wrench handle therewith if necessary toovercome rotational resistance of the nut. It will be further seen thatthe socket member may be used where the use of conventional-type socketwrenches would be impractical, such as when the nut is mounted upon along stud, or equivalent. In addition, it will be seen that the holdingmeans i.e., flange 14, will maintain the socket member in engagementwith the nut during operation thereupon, a convenience which is notalways afforded by wrenches of the prior art.

Referring to Figs. 5 to 7, a modified form of wrench is shown wherein asocket member 24, the body of which is preferably formed of a plasticmaterial such as cellulose acetate butyrate, has a metallic socketinsert 26 axially arranged as shown. The body of the socket member 24has an axial bore 27 about which is arranged a llange 28 adapted tooverlap the linner diameter of the socket insert 26, to act as a holdingmeans in the manner of ange 14 in the previously described embodiment.

The socket insert has a straight knurl 26a arranged about its outerperiphery, and has a circumferential rabbet 29 at one end thereof. Aplurality of through holes 31 are `arranged in the socket member forengagement by the pin members 122 of the wrench handle 12 if the latteris to be used with the socket member 24. The outer periphery of thesocket member 24 is knurled at '2.5 to afford a better gripping surfacewhen the socket member is placed upon a nut for manual rotation.

The 'body of the socket member 24, being plastic, will be molded aboutthe metallic socket insert 26, the latter being held in position betweenthe flange 28 and the plastic material which enters the circumferentialrabbet 29. The knurled surface of the metallic insert will lock It is tobe noted, that the diameterof the insert within the socket member.Instead of straight knurls on the outer surface of the metallic socketinsert 26, diamond shaped protrusions 32 may Ibe used for locking theinsert within a socket member as illustrated in Fig. 7. In such anarrangement, it would not be necessary to provide a circumferentialrabbet such as rabbet 29, since the diamond shaped protrusions willprevent axial or rotational movement of the insert relative to thesocket member 24.

The use of the rnodilied socket member 24 for operation upon a nut, isidentical to that of the socket member 11, the main difference `being inthe manner of fabrication, and the material fused.

From the foregoing it will be seen that the disc socket wrench of theinvention may be conveniently used where it would be impractical orimpossible to use conventional type socket wrenches.

The foregoing description has been given in detail without thought oflimitation since the inventive principles involved are capable ofassuming other physical embodiments without departing from the spirit ofthe invention and the scope of the appended claims.

What is claimed is:

1. In a disc socket wrench, a disc-like member having a body formed of aplastic material with a recess entering from one face and terminatingshort of the opposite face to provide an inwardly directed angesurrounding an axially arranged bore, and a metal insert in said recessand adapted to provide the peripheral surface of a nutengageable socket,said flange overlying one end of the insert and extending inwardlythereof to provide the radial surface of said nut-engageable socket,said insert having serrations on its outer periphery in relativenonrotative engagement with said body.

2. In a disc socket wrench, a disc-like member having a body formed of aplastic material with a recess entering from one face and terminatingshort of the opposite face to provide an inwardly directed flangesurrounding an axially arranged bore, and a metal insert in said recessand adapted to provide, the peripheral surface of a nut-engageablesocket, said flange overlying one end of the insert and extendinginwardly thereof to provide the radial surface of said nut-engageablesocket, said insert having parallel serrations on Vits outer peripheryin re1a tive nonrotative engagement with said body and being formed toprovide a circumferential rabbet engaging said body at the end of saidinsert opposite to that adjacent the inwardly directed flange.

3. In a disc socket wrench, a disc-like member having a Ibody formed ofa plastic material with a recess entering from one face and terminatingshort of the opposite face to provide an inwardly directed angesurrounding an axially arranged bore, and a metal insert in said recessand adapted to provide the peripheral surface of a nut-engageablesocket, said ange overlying one end of the insert and extending inwardlythereof to provide the radial surface of said nut-engageable socket,said insert having diamond-shaped serrations on its outer periphery inrelative nonrotative engagement with said body.

Vjin-Ref'.er-encesV Cited in the file of this patent UNITED STATESPATENTS '151,315 Rowe May 26, 1874 867,205 MyersV Y. Sept. 24, 1907922,866 Edwins May 25, 1909 1,524,869 Kraft Feb. 3, 1925 1,569,117Carpenter Ian. 12, 1926 71,882,462, Weber Oct. 11, 1932 2,418,638 HooverApr. 8, 1947 2,824,476 Wilson Feb. 25, 1958 FOREIGN PATENTS 404,910Great Britain Jan. 25, 1934

